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  5. Alexander Ioffe: Postgres runs your query fast exactly five times. Then it changes its mind. One prepared statement, twelve EXPLAIN ANALYZE runs on one connection, a plan change on run six, and why a single run could never have shown it.
Alexander Ioffe: Postgres runs your query fast exactly five times. Then it changes its mind. One prepared statement, twelve EXPLAIN ANALYZE runs on one connection, a plan change on run six, and why a single run could never have shown it.
EM FOCO

Alexander Ioffe: Postgres runs your query fast exactly five times. Then it changes its mind. One prepared statement, twelve EXPLAIN ANALYZE runs on one connection, a plan change on run six, and why a single run could never have shown it.

A prepared statement ran in 274 ms for five executions and 2,319 ms from the sixth, on the same connection in the same minute. One EXPLAIN ANALYZE is a sample of size one and cannot see this; twelve in a row, with the plan kept per run,…

Bancos de dadosPlanet PostgreSQLPublicado: 11 de setembro de 2026
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